AN4376 Datasheet, PDF (1/37 Pages) STMicroelectronics – 10 W wide range non-isolated high power factor LED driver using HVLED815PF

AN4376
Application note
10 W wide range non-isolated high power factor LED driver using
HVLED815PF
Federico Levati
Introduction
This application note describes the performances of a non-isolated 10 W, wide range,
regulated LED driver using the HVLED815PF device, with a high power factor and
a constant output current regulation. The maximum power and form factor have been
designed for the lighting market, facilitating the replacement of the incandescent lamps.
In fact the architecture is based on a single-stage buck-boost topology and it has been used
the STMicroelectronics^® HVLED815PF device with a primary side control to achieve an
LED current regulation within ± 5% and a high power factor.
The patented primary side regulation, the internal high-voltage primary switcher operating
directly from the rectified mains and the high-voltage start-up generator contained in the
HVLED815PF device allow a very cost-effective solution for an LED driving.
Figure 1. EVLHVLED815W10A demonstration board
January 2014
DocID025380 Rev 1
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